navigation-api/navigation-methods/navigate-from-initial-about-blank-src.html

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="i" src="/common/blank.html"></iframe>

<!--
  Sort of a regression test for https://bugs.chromium.org/p/chromium/issues/detail?id=1289864,
  but since that is GC-dependent this will probably not fail in codebases that exhibit that bug.
  So it's really just adding some extra general coverage for navigation.navigate().
-->

<script>
async_test(t => {
  i.contentWindow.navigation.navigate("/common/blank.html?1");
  i.onload = t.step_func_done(() => {
    const iframeURL = new URL(i.contentWindow.navigation.currentEntry.url);
    assert_equals(iframeURL.pathname, "/common/blank.html");
    assert_equals(iframeURL.search, "?1");
  });
}, `navigate() from <iframe> with src="" but still on initial about:blank works`);
</script>